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Cash Register
CMS 140 B
SERVICE MANUAL
PUBLICATION ISSUED BY: Olivetti Lexikon, S.p.A. Documentazione 77, Via Jervis - 10015 Ivrea (Italy) Copyright © 1998, by Olivetti All rights reserved
PREFACE
This manual is addressed to the field engineers who will install and service the CMS 140B cash register. It provides all the information needed for a correct product maintenance.
SUMMARY
This manual is divided into seven chapters. The first three chapters describe the operating, functional checks, and maintenance and repair procedures. Chapter 4 describes the disassembly and adjustment procedures. Chapters 5, 6 and 7 describe the electronic circuitry, schematics and diagram and assembly construction.
PREREQUISITES
The topics described in this manual require knowledge of similar products.
REFERENCE DOCUMENTATION
Instruction Manual - (provided with the product) Spare Parts Catalogue
DISTRIBUTION: General FIRST EDITION: December 1998
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CONTENTS
1. OVERVIEW ..................................
1.1 TECHNICAL SPECIFICATIONS .....
1-1
1-2
4. DISASSEMBLY PROCEDURE/HOW TO LOCATE THE ASSEMBLIES 4-1
4.1 HOW TO LOCATE THE POWER ASSEMBLY .................................... THE REMOTE BATTERIES/ LOCATION OF ON/OFF SWITCH . MACHINE DISASSEMBLY REASSEMBLY ...............................
4.3.1 4.3.2 4.3.3 4.3.4 4.3.5 4.3.6 Machine Case ........................... Printer Unit ............................... Main Board and Display .......... Paper Feed Motor .................... Battery Compartment ............... Keypad .....................................
2. SPECIFICATIONS AND OPERATING PRINCIPLES .........
2.1 SPECIFICATIONS .........................
2.1.1 2.1.2 2.1.3 Features ................................... Specifications ........................... Mechanisms ............................. Transmission/Select Mechanism Sensor Mechanism ................... Printing Mechanism .................. Inking Mechanism ..................... Paper Feeding Mechanism ....... Print Cycle Initialization .............
4-1 4-2 4-3
4-3 4-3 4-4 4-4 4-5 4-5
2-1
2-1
2-1 2-1 2-2
4.2 4.3
2.2
OPERATING PRINCIPLES ...........
2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6
2-3
2-3 2-7 2-8 2-9 2-10 2-12
5. BLOCK STRUCTURE CHART ...
5.1 CIRCUITRY ....................................
5-1
5-1
3. HANDLING, MAINTENANCE .......
3.1 HANDLING THE PRINTER ...........
3.1.1 3.1.2 3.1.3 Precautions on Printer Handling Paper Installation ...................... Ink Roller Installation ................ Cleaning .................................. Inspection ................................. Lubricant Types ....................... Lubrication Points .................... List of lubricants .......................
3-1
3-1
3-1 3-2 3-3
6. SCHEMATICS AND DIAGRAMS
6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 SYSTEM BLOCK DIAGRAM .......... POWER SUPPLY CIRCUIT ............ RESET CIRCUIT ............................ POWER FAIL CIRCUIT .................. DISPLAY CIRCUIT ......................... KEYBOARD CIRCUIT .................... BUZZER CIRCUIT .......................... BATTERY CIRCUIT ....................... PRINTER CIRCUIT ........................
6-1
6-1 6-2 6-3 6-3 6-4 6-5 6-6 6-6 6-7 6-9
3.2
MAINTENANCE .............................
3.2.1 3.2.2
3-4
3-4 3-4
3.3
LUBRICATION ...............................
3.3.1 3.3.2 3.3.3
3-4
3-4 3-4 3-4
3.4 3.5 3.6
PROBLEM RESOLUTION .............. PRINTER PIN ASSIGNMENTS ...... TIMING CHART ..............................
3-5 3-7 3-9
6-10 SCHEMATIC DIAGRAM .................
7. ASSEMBLY CONSTRUCTION ...
7-1
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1. OVERVIEW
Fig. 1-1 Overall View of the Cash Register
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Type:
TECHNICAL SPECIFICATIONS
Electronic cash register with 8 departments Bright double display with 16x6 mm numbers, error symbol, change, subtotal, minus, total and quantity 9 digits ECR exclusive serial printer 57 mm wide wood-free single ply tape Approx. 3 months after power interruption with 4 1.5 V Mignon batteries CMOS RAM AC Adapter Internal Battery 220 V Stand-by 2.2 W; operating 4 W 0° to 40° C Depth 425 mm, Width 325 mm, Height 210 mm Approx. 6 Kg
Display: Display capacity: Printer: Paper supply: Memory protection: Technology: Power supply: Line voltage: Power consumption: Operating temperature: Dimensions: Weight:
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2. SPECIFICATIONS AND OPERATING PRINCIPLES
2.1
2.1.1
SPECIFICATIONS
FEATURES
Paper (supplied by the user) Type: Regular paper roll Size: Width 57.5 mm ± 0.5 mm Roll diameter: 80 mm or less Thickness: 0.06 ~ 0.085 mm Average weight: 47 g/m2 ~ 64 g/m2 (40 ~ 55 kg/ 1000 sheets/1091 x 788 mm) Paper feeding Typically 4.3 Ips. Fast paper feeding is also possible, and a paper release mechanism is provided. Inking Ink roller method Ink roller life: 700,000 characters Standard: IR-30 (IR-40 is also applicable) Motor Terminal voltage: 6.0 VDC Average current: Approximately 0.14 A (during 13-column, 7-character shift printing at 6.0 VDC, 25°C/77°F) Sensor Mechanical point of contact Reset signal R, Timing signal T, and Sub-timing signal t Trigger coil (electromagnet) Terminal voltage: 6.0 VDC D.C. resistance: 16.7 (at 25°C/77°F) Connection method Jumper wire on printer side Guaranteed operating temperature 0° - 40°C / 32° - 104°F (guaranteed printing temperature: 5° - 40°C/41° - 104°F)
The Micro Printer is designed for use with calculators. It offers the following features: · · · · · · · · Ultra-compact and lightweight design. Movable type for sharp printing quality. High printing speed using a mechanism that can return the carriage from any column position. Silent printing. Quick feeding and paper free functions. Can run on size AAA manganese batteries (lowpower drive). Uses ordinary paper. Requires no motor speed control.
2.1.2
SPECIFICATIONS
The main printer specifications are listed below. Print method Serial printing with movable type Carriage width Maximum of 13 printable columns (including 2 symbol columns) Character position On symbol column side: 12 positions + 2 empty positions On numeric column side: 14 positions Character size 1.6 (W) x 2.8 (H) mm Intercharacter intervals Between numerics: Between a numeric and a symbol: Line spacing 4.6 mm Print speed Average printing speed at 6.0 VDC, 13-column printing: Typically 0.7 I/s Typically 1.4 I/s
2.1 mm 2.6 mm
Reliability MCBF: 300,000 columns External dimensions 86 (W) x 58.4 (D) x 19 (H) mm (3.39 (W) x 2.30 (D) x 0.75 (H) inch) Weight Approximately 80 g (0.21Ib)
6-column printing:
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2.1.3
MECHANISMS
This printer consist of two print wheels, a hammer, and a carriage equipped with an ink roll. It is a serial printer with movable type, and it prints by sequentially moving the carriage across from the lowest-order column. When the motor is activated, the gear trains rotate and cause the print wheels and detection wheel to rotate. When the trigger coil charged by a signal (corresponding a character) output from the sensor, a character is selected, the print wheel stops, the print gear is rotated by the action of the planet gear, and a character is printed.
The carriage then shifts to the next column (columnshift operation). When charge to the trigger coil is extended during character selection at the end of a line, printing is performed and the carriage is returned to the initial column. The paper is then fed forward to complete the printing of one line. This printer consist of five mechanism: the transmission and select, defection, print, inking, and paper feeding. Fig. 2-1 shows an external view of the Micro serial Printer. For details on the operating principles and handling of each mechanism, see Subsection 2.2 Operating Principles, and Chapter 3 Handling and Maintenance.
Fig. 2-1 Exterior View
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2.2
2.2.1
OPERATING PRINCIPLES
TRANSMISSION/SELECT MECHANISM
As shown in Fig. 2-2, this mechanism consists of the reduction gear train, and paper feed gear train.
Fig. 2-2 Transmission/Select Mechanism
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Reduction gear series (See Fig. 2-2 and 2-3) The reduction gear train consists of the motor gear, reduction gear, planet gear, selective drive gear, selective gear assembly, selective pawl, and print changeover cam. When the motor rotates (2), the rotational force is sequentially reduced from the motor gear (3) on the same shaft through the gear train to the selective gear assembly (7).
The rotation of the print changeover cam is locked by the action of the selective pawl, so the paper feed ratchet wheel (8) on the same shaft as the selective gear assembly, the print wheel, and the detection wheel also rotate at the same time.
Fig. 2-3 Reduction Gear Series
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Select mechanism (See Fig. 2-2 and 2-4) As shown in Fig. 1-4, the select mechanism consists of the selective gear assembly, trigger coil, trigger plate, trigger lever, and selective pawl. The select mechanism operates during rotation of the reduction gear series. When a drive signal is input (9) to the trigger coil in conformance with the timing signal output from the sensor, the trigger plate is drawn (10) to the yoke fixed on the selective gear assembly so that the trigger plate (11), trigger lever (12), and selective pawl (13) rotate together with the selective gear assembly. At the same time as the print changeover cam is unlocked, the selective pawl locks (15) the tooth section corresponding to the character of the selective gear assembly. When the selective gear assembly is stopped, the print wheel mounted on the same shaft also is stopped, and the character selected.
Print gear series (See Fig. 2-2 and 2-4) The print gear series consists of the print changeover cam and the print gear. When the selective gear assembly is stopped by the select mechanism, the interlocked selective drive gear is also stopped. At the same time, the unlocked (14) print changeover cam is coupled and is rotated (16) by the planet gear of the totalling reduction gear series. The print gear thus rotates (17) and transmits its movement to the printing mechanism.
Fig. 2-4 Select Mechanism and Print Gear Series
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Paper feeding gear series (See Fig. 2-2 and 2-5) As shown in Fig. 2-5, the paper feeding gear series consists of the paper feed ratchet wheel, paper feed ratchet, paper feed drive gear assembly, paper feed transmission gear, and paper feed gear. During column selection or consecutive paper feeding, the select mechanism and printing gear series operate by extending the trigger coil drive signal at the first column during space selection. However, the return lever and trigger lever are unlocked (18) to maintain the operation of the trigger plate and trigger lever. When the print changeover cam rotates, the cam controlling the return lever reaches a notched section. The return lever is thereby released and beings operating (19) due to spring force, and its interlocking with the paper feed ratchet is cancelled (20).
The paper feed ratchet on the paper feed drive gear assembly operates (21) due to spring force and meshes with the teeth of the paper feed ratchet wheel on the same shaft as the selective gear. When printing operation is completed, the print changeover cam causes the selective pawl to return to its pre-selection status, and the print changeover cam is stopped. When the selection gear begins rotation, the paper feed drive gear assembly (22), paper feed transmission gear (23), and paper feed gear (24) all rotate together with the paper feed ratchet wheel. This movement is then transmitted to the paper feeding mechanism.
Fig. 2-5 Paper Feeding Gear Series
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2.2.2
SENSOR MECHANISM
The sensor also generates a reset signal at each rotation of the print wheel. Waveform rectification of these signals should be performed by the user, as timing or reset pulses.
(See Fig. 2-6) The sensor mechanism consists of the sensor assembly and the sensor gear. The sensor employs a mechanical contact-point system and generates a timing signal T and a sub-timing signal t in correspondence to each character position on the print wheel.
Fig. 2-6 Sensor Mechanism
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2.2.3
PRINTING MECHANISM
Thus, the print wheel is pressed in the direction of ¬ arrow (4) by the hammer, and printing is performed. The print wheel, similar to the print changeover cam, rotates once with each printing operation, and printing is performed during the first half of the print shaft rotation.
The printing mechanism performs two operations: printing and carriage movement. Printing operation (See Fig. 2-7) When the print gear series (see Subsection 2.2.1, Transmission/Select Mechanism) causes the print shaft and print cam to rotate in the direction of a arrows (1) and (2), the hammer rotates in the direction of ¬ arrow (3).
Fig. 2-7 Printing Operation
Carrying operation (See Fig. 2-8) Carrying is performed after printing, during the second half of the print shaft rotation. As soon as the positioning plate begins rotating the print gear, the cam section of the print gear unlock its meshing the return lever, and the print gear meshes with the print cam. When the print shaft rotates in the direction of ¬ arrow (1), the meshing between the teeth of the print cam and the teeth of the positioning plate causes the print shaft to slide in the direction of ¬ arrow (2) while rotating in the direction of ¬ arrow (3). The simultaneously with this carriage unit is carried sliding action (¬ arrow (4))
Fig. 2-8 Carrying Operation
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2.2.4
INKING MECHANISM
(See Fig. 2-9) The ink roller is held lightly against the other periphery of the print wheel by the force of the ink roller spring. When the print wheel rotates, the ink roller also rotates and supplies ink to the wheel.
Fig. 2-9 Inking Mechanism
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2.2.5
PAPER FEEDING MECHANISM
The rotation of the print changeover cam restores the return lever to its original position (¬ arrow (3)) and rotates the positioning plate with which it is meshed (¬ arrow (4)). As a result, the teeth of the positioning plate and print cam are disengaged (5), and the force of the print wheel spring and carriage spring returns the carriage (¬ arrow (6)).
The paper feeding mechanism performs two operations: carriage return and paper feeding. Carriage return operation (See Fig. 2-10) The paper feeding gear series (see Subsection 2.2.1, Transmission/Select Mechanism) causes the return lever to drop into the cam section of the print changeover cam so that it meshes with the positioning plate (¬ arrow (1) and (2)).
Fig. 2-10 Carriage Return Operation
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Paper feeding operation (See Fig. 2-11) Paper is feed while the paper feed drive gear assembly performs one rotation. When the paper feeding gear series (see Subsection 2.2.1, Transmission/ Select Mechanism) causes the paper feed gear to rotate in the direction of ¬ arrow (1), the paper feed roller within the platen also rotates in the direction of ¬ arrow (2), and the paper is fed by friction between the paper hold roller and the paper feed roller.
When the paper feed ratchet within the paper feed drive gear assembly strikes the return lever, it disengages from the paper feed ratchet wheel, the rotation of the paper feed drive gear assembly stops, and paper feeding terminates.
Fig. 2-11 Paper Feeding Operation
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2.2.6
PRINT CYCLE INITIALIZATION
To confirm that carriage is in stand-by status (at the first column), initialization must be performed prior to printing and paper feeding. Initialization is completed by performing a line feed. The following paragraphs describe printer timing operations for printing and paper feeding. Printing of the first line 1) The Timing pulses TP are counted after the motor drive signal is applied and the motor is activated. The reset pulse RP appearing after eight timing pulses is regarded as RPo, and the first timing pulse TP after RPo rises is regarded as TPo. 2) Character selection (first column) The trigger coil drive pulse is applied to the trigger coil during the interval from timing pulse TPn to TPn + 1 which corresponds to the desired character. At that time, the timing pulse interval (TPn to TPn +1) is measured to obtain TW1. Following character selection, the print wheel stops (the timing pulse retains the TPn + 1 status). Printing and carrying are then automatically executed. 3) Character selection (second column and onward) The print wheel starts rotating again and the first timing pulse is TPn +2. Character selection can be performed from next timing pulse TPn + 3. The rest of the character selection operation is identical to that described in step 2) above. 4) Carriage return and paper feeding During character selection for the highest-order column of a line of print, printing, carriage return, and paper feeding are performed by adding: [the width of the drive pulse to the trigger coil] + [the timing pulse interval TW2 (TPn to TPn + 1) at that time] + [(the TP interval TW1 measured during the selection of the first column) x 6]. 5) Motor off After completing the highest order printing in one line, the print wheel begins to rotate and timing pulse TP is generated. Counting from this initial rising pulse, the motor drive signal is cut off at the rise of the 14th timing pulse TP. NOTE: · The first timing pulse generated after the print column-shift process (TPn + 2) cannot be used for character selection.
Consecutive printing 1) The process for printing the initial line similar to that for "Printing the first line" above. 2) Printing of second and later lines begins as follows: After printing the first line, the following pulses TP are counted with the motor still driven. Printing of the first column of the second line then begins at the rise of the 14th timing pulse in cases where the number of columns in the first line is 7 or less, otherwise, printing begins at the 21st timing pulse. The same procedures as those in steps 2) to 4) of "Printing the first line" above are then performed. 3) Consecutive printing is performed by repeating step 2) above. 4) Motor off Step 5) of "Printing the first line" above is performed. Paper feeding for the first line 1) The timing pulses TP are counted after the motor drive signal is applied and the motor is activated. The reset pulse RP appearing after eight timing pulses is regarded as RPo, and the first timing pulse TP after RPo rises is regarded as TPo. 2) Paper feeding The empty character TP10 is selected. At that time, the timing pulse interval TP10 to TP11 is measured to obtain TW1. When the width of the trigger coil drive pulse equals the measured TW1 plus six times TW1, the empty character on the print wheel is selected and the paper is fed. 3) Motor off After the paper is fed for one line, the print wheel begins to rotate. Counting from the initial rising timing pulse, the motor drive signal is cut off at the rise of the 14th timing pulse TP. Fast paper feeding 1) The process for feeding the initial line is similar to that for "Paper feeding for the first line" above. 2) Paper feeding for the second and later lines begins as follows: after completing the paper feeding for the first line, with the motor remaining driven, the following timing pulses TP are counted. From the rise of the 21st timing pulse, selection of the empty character TP10 becomes possible. Step 2) of "Paper feeding for the first line" above is then performed. 3) Fast paper feeding is performed by repeating step 2) above. 4) Motor off Step 3) of "Paper feeding for the first line" above is performed.
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3. HANDLING, MAINTENANCE
3.1
3.1.1
HANDLING THE PRINTER
PRECAUTIONS ON PRINTER HANDLING
Transport precautions (See Fig. 3-1) 1) When transporting the printer, never carry it by the jumper lead only. 2) Avoid impact to the printer by dropping, striking it, or collision with another printer.
Fig. 3-1 Proper Handling of Printer
Storage precautions · Avoid storage in locations exposed to excessive dirt, dust, moisture, or in direct sunlight. · For long-term storage (over one month), place the printer in a polyethylene bag after wrapping it in anti-rust (VPI) paper, then store it in a dry location.
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Use precaution · Since the printer employs a permanent magnet (in the motor section), avoid using it in locations exposed to excessive iron filings, dirt, dust, or other foreign particles. · Never use the printer without the paper and ink roller installed. · Make sure to use only the specified paper and ink roller. · The ink roller is a disposable part; do not attempt to refill its ink supply.
Paper insertion precautions · Insert the paper straight into the paper entrance. Never insert paper having an uneven leading edge; never insert paper at a slant. · Push the paper in the feeding direction to make insertion easier. Removing the paper Remove the paper by following one of the two methods below: · Perform paper feed using an electrical operation: Switch on the printer, press the Paper Feed button, and remove the paper. · The paper release mechanism in stand-by status allows the paper to be freely removed by pulling it out the printer. Pulling out the leading edge of the paper at a slant may cause jamming.
3.1.2
PAPER INSTALLATION
Loading the Paper When loading the paper into the printer, make sure to heed the following points. Paper insertion Insertion the paper into the printer with the paper roll positioned as shown in Fig. 3-2.
Fig. 3-2 Paper Insertion
Leading edge of the paper roll The leading edge of the paper from the paper roll should be cut straight as shown in Fig. 3-3.
Fig. 3-3 Leading Edge of the Paper Roll
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3.1.3
INK ROLLER INSTALLATION
Mounting the Ink roller (See Fig. 3-4) · Place the ink roller in the cutout sections of the carriage, then press down gently until it clicks into place.
Fig. 3-4 Ink Roller Installation
Replacing the ink roller (See Fig. 3-5) · Press the knob of the ink roller in the direction of the ¬ arrow, then lift the ink roller up and out of the carriage.
Fig. 3-5 Ink Roller Replacement
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3.2
MAINTENANCE
3.2.2
INSPECTION
To prevent potential trouble, make sure cleaning and inspection is carried out according to the points described in the following subsections, depending on the environment in which the printer is used.
Check the printer to see if it is being operated properly and if it is being maintained in optimum condition. If any unsatisfactory points are discovered, they should be remedied. In particular: · · Make sure that the ink roller is securely installed in the carriage. Make sure that the ink roller in use conforms to the specifications. Check the ink roller for damage, and replace it if it is affecting print quality.
3.2.1
CLEANING
Eliminating dirt or stains Wipe off soiled areas using alcohol or benzene. Eliminating dust, scraps, and other foreign particles Use a vacuum cleaner to carefully draw out all foreign particles from every area of the printer. NOTES: Never use thinner, tricholyene, or ketone solvent as they may deteriorate or damage plastic parts. Check the lubricant remaining in each cleaned area and perform lubrication as required (see Subsection 3.3.2, Lubrication Points).
3.3
3.3.1
LUBRICATION
LUBRICANT TYPES
The types of oil used greatly influence the performance and durability of the printer, especially at low temperatures.
3.3.2
LUBRICATION POINTS
No. (1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
Lubrication Point Contact point between selective gear assembly and trigger plate Contact point between print shaft and frame (2 points) Outer surface of print shaft Outer surface of print wheel shaft Contact point between print cam and hammer spring Contact point between print cam and the positioning plate Contact point between positioning shaft, frame, and return lever (3 points) Contact point between reduction gear and the E-ring contact point between selective drive gear and reduction gear Contact point between selective pawl and print changeover cam
Oil Type O-3 O-3 O-3 O-3 O-3 O-3 O-3 O-3 O-3 O-3
3.3.3
LIST OF LUBRICANTS
Item Oil Grease Designation O-3 G-34 Volume 40 gm 40 gm
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3.4
PROBLEM RESOLUTION
In general, the printer should be replaced when problems arise. Depending on the particular problem, however, the printer may be easily repaired. Therefore, take necessary corrective actions according to the following table. In the case of problems for which no corrective actions exist in this table, the printer should be replaced.
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3.5
PRINTER PIN ASSIGNMENTS
Fig. 3-6 illustrates the pin assignments of the printer circuitry. NOTE: The printer sensor side is regarded as "1".
Fig. 3-6 Pin Assignment Diagram
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3.6
TIMING CHART
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4. DISASSEMBLY PROCEDURE/HOW TO LOCATE THE ASSEMBLIES
Fig. 4-1 Cash Register Front View
4.1
HOW TO LOCATE THE POWER ASSEMBLY
Fig. 4-2 Cash Register Rear View
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4.2
THE REMOTE BATTERIES/ LOCATION OF ON/OFF SWITCH
· · ·
Remove the cover (1). Remove the paper roll and roll holder. Remove the battery housing cover (2) in the direction of the arrow.
Fig. 4-3 Locating the Battery Compartment and Printer Cover
Fig. 4-4 Locating the ON/OFF Switch
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4.3
MACHINE DISASSEMBLY REASSEMBLY
MACHINE CASE
Reassembly · Correctly position the case on the machine. · Push the case (1) in the direction of arrow (5). · Tighten screw (1). · Plug the machine power cord into the electrical wall outlet.
4.3.1
Disassembly · Unplug the machine power cord from the electrical wall outlet. · Loosen screw (1) · Push the case of the machine (2) in the direction of the arrow (3). · Remove the case (2) by lifting it the direction of arrow (4).
Fig. 4-5 Machine Case Disassembly/Reassembly
4.3.2
PRINTER UNIT
Reassembly · Correctly position the printer (6) as shown in the figure. · Correctly position the paper support (5) and tighten its related securing screw (4). · Reattach the connector (3). · Refit the case of the machine (2) and the printer compartment cover (1).
Disassembly · Remove the printer compartment cover (1). · Remove the machine case (2). · Disconnect connector (3). · Using a screwdriver, remove screw (4) that secures the paper support (5) and remove this support. · Remove the printer (6) in the direction of the arrow shown being careful to avoid damaging the connection cables.
Fig. 4-6 Printer Unit Disassembly/Reassembly
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4.3.3
MAIN BOARD AND DISPLAY
Reassembly Perform the disassembly procedure in reverse order.
Disassembly · Remove the machine case. · Disconnect the printer connector (1). · Disconnect the paper feed motor connector (2). · Disconnect the keypad connectors (3). · Disconnect the battery supply connectors (4). · Disconnect the power supply connector (5). · Disconnect the battery supply connector (6). · Using a screwdriver, remove the securing screws (7). · Remove the main board (8).
Fig. 4-7 Main Board and Display Disassembly/Reassembly
4.3.4
PAPER FEED MOTOR
Reassembly · Correctly position motor (3). · Tighten securing screws (2). · Reconnect the motor power supply connector (1). · Refit the machine case.
Disassembly · Remove the machine case. · Disconnect the motor power supply connector (1). · With a screwdriver, remove securing screws (2). · Remove motor (3) with its related support (4).
Fig. 4-8 Paper Feed Motor Disassembly/Reassembly
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4.3.5
BATTERY COMPARTMENT
Reassembly · Perform the disassembly procedure in reverse order.
Disassembly · Remove the machine case. · Remove the securing screws (1). · Remove the battery compartment.
Fig. 4-9 Battery Compartment Disassembly/Reassembly
4.3.6
KEYPAD
Reassembly · Correctly position the keypad (3) and the ON/OFF switch (4). · Tighten the securing screws (2). · Restore connection (1). · Refit the machine case.
Disassembly · Remove the machine case. · Disconnect the keypad - main board connectors (1). · Using a screwdriver, remove securing screws (2). · Remove the keypad (3) together with the machine's ON/OFF switch (4).
Fig. 4-10 Keypad Disassembly/Reassembly
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5. BLOCK STRUCTURE CHART
As illustrated in the Chapter 6. · Block G: Black-Out Detection Signal: Blackout signal is generated when voltage in Vcc line drops to 3.0 V. This signal gets "low" at the time of blackout and is transferred to Port 42 for CPU to dispose it. Once blackout is detected, X IN halts and only X CIN oscillates to turn the cash register for electric consumption mode. Backup currency at this time is about 10-40 uA. Block H: Printer Control: · Motor Drive: P51 (low active) · Printing Trigger: P50 (low active) · Timing Signal: P43 · Reset: P44 NOTE: Waveforms for timing signals and reset signals are shaped by flip-flop at NAND gate. · Block I: Circuitry: This machine operates both by dry batteries and with use of AC adaptor. Inserting an adaptor jack automatically disconnect the battery circuit. Voltage at each power line is as follows (at rated voltage input). VBB: 6.0 V (with backup) Vcc: 6.0 V Vprm: 6.0 V (when printer is not working) V BB / V cc are provided via a stable circuit that uses 3-terminal regulator (S81250HG).
5.1
CIRCUITRY
Functions in each circuit is explained below block by block. · Block A: Display Control LCD driver is included in the main CPU and is directly driven by ports below. * COM 0 - COM 1 - COM 2 * SEG 0 - SEG 25 - SEG 32 - SEG 33 LCDs are 1/3 duty,1/2bias. · Block B: Scan Signal for Key switch, Mode switch and Paper feed key: Scan Signal Output Ports: from ports P07 - P12P60 and P61 , by High-active scan output. Key switch: when P54 - P57 are depressed, they are accepted as return input of the key matrix. Mode lock switch and Feed key: P53 is read in as a return input. * To prevent input errors caused by chattering, data will be read twice before accomplishing key input. Block E: Buzzer: When Port P45 gets high, oscillating signals programmed at NAND gate make transistor 2SA2603 on/off and make the buzzer buzz. Block F: Reset Circuit: Reset IC works to reset main CPU. NOTE: 1) Reset does not work when backup function is working. 2) CPU needs to be reset at the first setting up, otherwise normal operation would be hindered. To secure normal operation, first install operation batteries worth OFF mode. Next turn the key to REG1 mode, then place memory backup batteries.
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·
·
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5-1
6. SCHEMATICS AND DIAGRAMS
6.1 SYSTEM BLOCK DIAGRAM
Fig. 6-1 System Block Diagram
686770R
Service Manual
6-1
6.2
POWER SUPPLY CIRCUIT
Fig. 6-2 Power Supply Circuit
6-2
Service Manual
686770R
6.3
RESET CIRCUIT
Fig. 6-3 Reset Circuit
6.4
POWER FAIL CIRCUIT
Fig. 6-4 Power Fail Circuit
686770R
Service Manual
6-3
6.5
DISPLAY CIRCUIT
Fig. 6-5 Display Circuit
6-4
Service Manual
686770R
6.6
KEYBOARD CIRCUIT
Fig. 6-6 Keyboard Circuit
686770R
Service Manual
6-5
6.7
BUZZER CIRCUIT
Fig. 6-7 Buzzer Circuit
6.8
BATTERY CIRCUIT
Fig. 6-8 Battery Circuit
6-6
Service Manual
686770R
6.9
PRINTER CIRCUIT
Fig. 6-9 Printer Circuit
686770R
Service Manual
6-7 .
6.10 SCHEMATIC DIAGRAM
686770R
Service Manual
6-9.
7. ASSEMBLY CONSTRUCTION
686770R
Service Manual
3-11 7-1.
REF.
CODE
DESCRIPTION
SPARE PARTS CATALOGUE
IMPORTANT This publication is written by TA TRIUMPH-ADLER Vertriebs GmbH (Service Department). This document is the only document to which reference may be made for ordering spare parts Spare parts should be ordered at the following address: TA Triumph-Adler Vertriebs GmbH Service Department Fürther Straße 212 Nuremberg
November 1998 Subject to Alterations
TA Triumph-Adler Vertriebs GmbH Fürther Straße 212 90429 Nürnberg
686770R
Spare parts catalogue
A - 1
EXPLODED PARTS
REF. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 CODE 037498 037499 037500 037502 037503 037504 128710 037505 037506 037507 037508 037509 037510 037511 037512 037513 037514 037515 N P U J K L D M N P Y Z M A B C D E DESCRIPTION MAIN BOARD M38203M4-374FP DISPLAY LCO- B5180A COMPLETE KEYBOARD ASSEMBLY KEY DRAWER PRINTER M31-041 MOTOR DRAWER GROUP COVER ASSEMBLY PRINTER COVER FRONT COVER DEPOSIT DRAWER WINDING REEL BATTERY BOX BATTERY COVER DISPLAY FILTER CAM LOCK KEYSET AC ADAPTOR
A - 2
Spare parts catalogue
686770R
EXPLODED PARTS
REF. CODE DESCRIPTION
17 10 16
4
9
3 15
2 14 1 18
13
7 11 5
6
12
8
686770R
Spare parts catalogue
A - 3.
STATO DI AGGIORNAMENTO STA AGGIORNAMENT GGIORNAMENTO UPDA STA UPDATING STATUS
DATA DATE
PAGINE AGGIORNATE UPDATED PAGES
PAGINE PAGES
CODICE CODE
2/1999
1a
EDIZIONE - 1st EDITION
55
686770R-00